Double X Science - It's In Your Genes

Search Results for: label/Mammals suck... Milk

  • Dinosaur Aunts, Bacterial Stowaways, & Insect Milk

    …diversity and abundance of lactic acid bacteria in the milk of rhesus monkeys (Macaca mulatta). J Med Primatol. 40: 52-58 Martin et al. 2012. Sharing of Bacterial Strains Between Breast Milk and Infant Feces. J Hum Lact. 28: 36-44 Oftedal 2012. The evolution of milk secretion and its ancient origins. Animal. 6: 355-368. Peterson et al. 2007. The phylogeny and evolution of host choice in the Hippoboscoidea(Diptera) as reconstructed using four mol…

    Authored by on July 17, 2012

  • Biology Xplainer: Evolution and how it happens

    …he population will change over time. It will be adapted to its environment. It will evolve. Other mechanisms of evolution A pigeon depicted in Charles Darwin’sVariation of Animals and PlantsUnder Domestication, 1868. U.S.public domain image, via Wikimedia. When Darwin presented his idea of natural selection, he knew he had an audience to win over. He pointed out that people select features of organisms all the time and breed the…

    Authored by on January 29, 2012

  • Biology Explainer: The big 4 building blocks of life–carbohydrates, fats, proteins, and nucleic acids

    …ll selection of different materials: bricks, mortar, iron, glass, and wood. Arranged in different ways, these few materials can yield a huge variety of structures. We encountered functional groups and the SPHONC in Chapter 3. These components form the four categories of molecules of life. These Big Four biological molecules are carbohydrates, lipids, proteins, and nucleic acids. They can have many roles, from giving an organism structure to be…

    Authored by on June 8, 2012

  • After Newtown missteps, journalists get guidelines

    …almost twice as likely to say that they don’t want to live or work near a person with mental illness if they read an article about a person with mental illness involved in a mass shooting, according to a study published March 20 in the American Journal of Psychiatry. Interestingly, this tendency is the same even if the article avoids any mention of mental illness. This may be because this link between violence and mental illness is deeply engrain…

    Authored by on March 27, 2013

  • Why blueberries won’t turn you blue and other blueberry facts

    …ge. While almost all the vitamins and minerals nutrition gurus like to report on are present to some amount, for the 2000-calorie diet, that one cup of blueberries will provide the recommended daily value of 24% of Vitamin C, 36% of Vitamin K, and 25% of manganese. The remaining values range from 0-4%. (Values obtained from Nutrition.com and verified through multiple sources.) The Wikipedia entry is quite good and well researched (as of August…

    Authored by on September 3, 2012

  • Freezing Point: Science never tasted so good!

    …This is because salt will lower the freezing point of water, thereby helping to keep it from turning into an icy mess, even when temperatures are below freezing.  But, it will only work if the walkway is warmer than -9°C (or 15°F).  How does this relate back to ice cream?  Well, we can use the same idea of lowering the freezing point of water and apply it to making cream freeze.  The set-up involves two resealable plastic bags (one quart-size…

    Authored by on December 13, 2011

  • Literal XX Xplainer: How we can live with two X chromosomes

    …ous about this dosage compensation thing and will tolerate no Xtra dissent. If we kept the entire X chromosome active, that would be a lot of Xtra gene dosage. The X chromosome contains about 1100 genes, and in humans, about 300 diseases and disorders are linked to genes on this chromosome, including  hemophilia  and  Duchenne muscular dystrophy . Because males get only one chromosome, these X-linked diseases are more frequent among males–…

    Authored by on June 27, 2012

  • Organic versus conventional foods–no winner?

    …ganically produced foods. Perhaps their advertising is poorly targeted. Oddly enough, the researchers did find some potentially higher nutritional benefits of some organic foods, such as more “heart-healthy” omega 3 fatty acids in organic milk compared to conventionally produced milk. What about you? Do you buy organic? If so, what are your reasons?  ————————- For further reading, check…

    Authored by on September 4, 2012

  • Friday Roundup: Jane Austen’s arsenic poisoning, breastfeeding and bones, dog bites that trigger pregnancy, and a cranky crab

    Jane Austen. Engraving via Wikimedia Commons, in the U.S. public domain. Curious about how climate has changed over the long term–the very, very long term? This video from the National Oceanic and Atmospheric Administration puts it all into perspective: Jane Austen poisoned by arsenic ?  A mystery author claims that all signs point to arsenic poisoning as the cause of Jane Austen’s death. The rationales that treatments w…

    Authored by on November 18, 2011

  • From spiders to breast cancer: Leslie Brunetta talks candidly about her cancer diagnosis, treatment, and follow-up

    …g and fatigue, but I was lucky that I didn’t experience either. Because I’m a freelancer, the time investment wasn’t a burden for me. I’m also lucky living where I live, because I could walk to the hospital. It was a pleasant 3-mile round-trip walk, and I think the walking helped me a lot physically and mentally. DXS: And now to the chemo. My interest in interviewing you about your experience began with a reference you made on Twitter to “chemo b…

    Authored by on January 31, 2012

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